Year Dollars 1997-01-01 12776445 2002-01-01 17668816 2003-01-01 27171066 2004-01-01 25831554 2005-01-01 37684755 2006-01-01 45367142 2007-01-01 57004056 2008-01-01 65689590 2009-01-01 34319724 2010-01-01 36152180 2011-01-01 39603707 2012-01-01 27074195 2013-01-01 39359746 2014-01-01 99293841 2015-01-01 44992371 2016-01-01 36746064